Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, USA.
Chem Commun (Camb). 2013 Mar 18;49(22):2173-82. doi: 10.1039/c2cc38252k.
The persistent ability of tripodal TREN-based tris-urea receptors (TREN = tris(2-aminoethyl)amine) to self-assemble with a variety of oxoanions into dimeric capsules upon crystallization is reviewed. The capsule crystallization allows for charge-, shape-, and size-selective encapsulation of tetrahedral XO(4)(n-) anions (n = 2,3), and provides an effective way to separate these anions from competitive aqueous environments.
三齿三嗪基三乙撑二胺（TREN）衍生的三脲受体具有持久的自组装能力，可在结晶时与各种氧阴离子形成二聚体胶囊。胶囊结晶可实现四面体 XO(4)(n-)阴离子（n = 2,3）的电荷、形状和尺寸选择性包合，并为从竞争性水相环境中分离这些阴离子提供了有效途径。
